libiberty/configure.in

   1 dnl Process this file with autoconf to produce a configure script
   2
   3 AC_PREREQ(2.13)
   4 AC_INIT(pexecute.c)
   5
   6 dnl We use these options to decide which functions to include.
   7 AC_ARG_WITH(target-subdir,
   8 [  --with-target-subdir=SUBDIR      Configuring in a subdirectory])
   9 AC_ARG_WITH(cross-host,
  10 [  --with-cross-host=HOST           Configuring with a cross compiler])
  11 AC_ARG_WITH(newlib,
  12 [  --with-newlib                    Configuring with newlib])
  13
  14 if test "${srcdir}" = "."; then
  15   if test -z "${with_target_subdir}"; then
  16     libiberty_topdir="${srcdir}/.."
  17   else
  18     if test "${with_target_subdir}" != "."; then
  19       libiberty_topdir="${srcdir}/${with_multisrctop}../.."
  20     else
  21       libiberty_topdir="${srcdir}/${with_multisrctop}.."
  22     fi
  23   fi
  24 else
  25   libiberty_topdir="${srcdir}/.."
  26 fi
  27 AC_CONFIG_AUX_DIR($libiberty_topdir)
  28
  29 dnl Very limited version of automake's enable-maintainer-mode
  30
  31 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  32   dnl maintainer-mode is disabled by default
  33   AC_ARG_ENABLE(maintainer-mode,
  34 [  --enable-maintainer-mode
  35                           enable make rules and dependencies not useful
  36                           (and sometimes confusing) to the casual installer],
  37       maintainer_mode=$enableval,
  38       maintainer_mode=no)
  39
  40 AC_MSG_RESULT($maintainer_mode)
  41
  42 if test "$maintainer_mode" = "yes"; then
  43   MAINT=''
  44   NOTMAINT='#'
  45 else
  46   MAINT='#'
  47   NOTMAINT=''
  48 fi
  49 AC_SUBST(MAINT)dnl
  50 AC_SUBST(NOTMAINT)dnl
  51
  52 # Do we have a single-tree copy of texinfo?  Even if we do, we can't
  53 # rely on it - libiberty is built before texinfo.
  54 AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
  55 if test "x$MAKEINFO" = "x"; then
  56     MAKEINFO="@echo makeinfo missing; true"
  57     BUILD_INFO=
  58 else
  59     BUILD_INFO=info
  60     case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
  61       x*\ [[1-3]].* )
  62         MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"
  63         BUILD_INFO=
  64         AC_MSG_WARN([
  65 *** Makeinfo is too old. Info documentation will not be built.])
  66         ;;
  67     esac
  68 fi
  69 AC_SUBST(MAKEINFO)
  70 AC_SUBST(BUILD_INFO)
  71
  72 AC_CHECK_PROG(PERL, perl, perl, )
  73 if test x"$PERL" = x""; then
  74   HAVE_PERL='#'
  75 else
  76   HAVE_PERL=''
  77 fi
  78 AC_SUBST(HAVE_PERL)
  79
  80 AC_CANONICAL_HOST
  81
  82 dnl When we start using automake:
  83 dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
  84
  85 dnl These must be called before AM_PROG_LIBTOOL, because it may want
  86 dnl to call AC_CHECK_PROG.
  87 AC_CHECK_TOOL(AR, ar)
  88 AC_CHECK_TOOL(RANLIB, ranlib, :)
  89
  90 LIB_AC_PROG_CC
  91
  92 AC_ISC_POSIX
  93 AC_C_CONST
  94 AC_C_INLINE
  95
  96 dnl When we start using libtool:
  97 dnl Default to a non shared library.  This may be overridden by the
  98 dnl configure option --enable-shared.
  99 dnl AM_DISABLE_SHARED
 100
 101 dnl When we start using libtool:
 102 dnl AM_PROG_LIBTOOL
 103
 104 dnl When we start using automake:
 105 dnl AM_CONFIG_HEADER(config.h:config.in)
 106 AC_CONFIG_HEADER(config.h:config.in)
 107
 108 dnl When we start using automake:
 109 dnl AM_MAINTAINER_MODE
 110 dnl AC_EXEEXT
 111
 112 dnl When we start using automake:
 113 dnl AM_PROG_INSTALL
 114 AC_PROG_INSTALL
 115
 116 . ${srcdir}/config.table
 117 host_makefile_frag=${frag}
 118 AC_SUBST_FILE(host_makefile_frag)
 119
 120 # It's OK to check for header files.  Although the compiler may not be
 121 # able to link anything, it had better be able to at least compile
 122 # something.
 123 AC_CHECK_HEADERS(sys/file.h sys/param.h limits.h stdlib.h string.h unistd.h strings.h sys/time.h time.h sys/resource.h sys/stat.h sys/mman.h fcntl.h alloca.h)
 124 AC_HEADER_SYS_WAIT
 125 AC_HEADER_TIME
 126
 127 libiberty_AC_DECLARE_ERRNO
 128
 129 AC_CHECK_TYPE(uintptr_t, unsigned long)
 130
 131 if test $ac_cv_type_uintptr_t = yes
 132 then
 133   AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
 134 fi
 135
 136 # This is the list of functions which libiberty will provide if they
 137 # are not available on the host.
 138
 139 funcs="asprintf"
 140 funcs="$funcs atexit"
 141 funcs="$funcs basename"
 142 funcs="$funcs bcmp"
 143 funcs="$funcs bcopy"
 144 funcs="$funcs bsearch"
 145 funcs="$funcs bzero"
 146 funcs="$funcs calloc"
 147 funcs="$funcs clock"
 148 funcs="$funcs ffs"
 149 funcs="$funcs getcwd"
 150 funcs="$funcs getpagesize"
 151 funcs="$funcs index"
 152 funcs="$funcs insque"
 153 funcs="$funcs memchr"
 154 funcs="$funcs memcmp"
 155 funcs="$funcs memcpy"
 156 funcs="$funcs memmove"
 157 funcs="$funcs memset"
 158 funcs="$funcs mkstemps"
 159 funcs="$funcs putenv"
 160 funcs="$funcs random"
 161 funcs="$funcs rename"
 162 funcs="$funcs rindex"
 163 funcs="$funcs setenv"
 164 funcs="$funcs sigsetmask"
 165 funcs="$funcs strcasecmp"
 166 funcs="$funcs strchr"
 167 funcs="$funcs strdup"
 168 funcs="$funcs strncasecmp"
 169 funcs="$funcs strrchr"
 170 funcs="$funcs strstr"
 171 funcs="$funcs strtod"
 172 funcs="$funcs strtol"
 173 funcs="$funcs strtoul"
 174 funcs="$funcs tmpnam"
 175 funcs="$funcs vasprintf"
 176 funcs="$funcs vfprintf"
 177 funcs="$funcs vprintf"
 178 funcs="$funcs vsprintf"
 179 funcs="$funcs waitpid"
 180
 181 # Also in the old function.def file: alloca, vfork, getopt.
 182
 183 vars="sys_errlist sys_nerr sys_siglist"
 184
 185 checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
 186
 187 # These are neither executed nor required, but they help keep
 188 # autoheader happy without adding a bunch of text to acconfig.h.
 189 if test "x" = "y"; then
 190   AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock)
 191   AC_CHECK_FUNCS(getcwd getpagesize index insque mkstemps memchr memcmp memcpy)
 192   AC_CHECK_FUNCS(memmove memset putenv random rename rindex sigsetmask)
 193   AC_CHECK_FUNCS(strcasecmp setenv strchr strdup strncasecmp strrchr strstr)
 194   AC_CHECK_FUNCS(strtod strtol strtoul tmpnam vasprintf vfprintf vprintf)
 195   AC_CHECK_FUNCS(vsprintf waitpid getrusage on_exit psignal strerror strsignal)
 196   AC_CHECK_FUNCS(sysconf times sbrk gettimeofday ffs)
 197   AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
 198   AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
 199   AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
 200 fi
 201
 202 # For each of these functions, if the host does not provide the
 203 # function we want to put FN.o in LIBOBJS, and if the host does
 204 # provide the function, we want to define HAVE_FN in config.h.
 205
 206 setobjs=
 207 CHECK=
 208 if test -n "${with_target_subdir}"; then
 209
 210   # We are being configured as a target library.  AC_REPLACE_FUNCS
 211   # may not work correctly, because the compiler may not be able to
 212   # link executables.  Note that we may still be being configured
 213   # native.
 214
 215   # If we are being configured for newlib, we know which functions
 216   # newlib provide and which ones we will be expected to provide.
 217
 218   if test "x${with_newlib}" = "xyes"; then
 219     LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o"
 220
 221     for f in $funcs; do
 222       case "$f" in
 223         asprintf | basename | insque | random | strdup | vasprintf)
 224           ;;
 225         *)
 226           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 227           AC_DEFINE_UNQUOTED($n)
 228           ;;
 229       esac
 230     done
 231
 232     # newlib doesnt provide any of the variables in $vars, so we
 233     # dont have to check them here.
 234
 235     # Of the functions in $checkfuncs, newlib only has strerror.
 236     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 237
 238     setobjs=yes
 239
 240   fi
 241
 242 else
 243
 244    # Not a target library, so we set things up to run the test suite.
 245    CHECK=check-cplus-dem
 246
 247 fi
 248
 249 AC_SUBST(CHECK)
 250
 251 case "${host}" in
 252   *-*-cygwin*)
 253     AC_DEFINE_NOAUTOHEADER(HAVE_SYS_ERRLIST)
 254     AC_DEFINE_NOAUTOHEADER(HAVE_SYS_NERR)
 255     ;;
 256 esac
 257
 258 if test -z "${setobjs}"; then
 259   case "${host}" in
 260
 261   *-*-vxworks*)
 262     # Handle VxWorks configuration specially, since on VxWorks the
 263     # libraries are actually on the target board, not in the file
 264     # system.
 265     LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
 266     LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
 267     for f in $funcs; do
 268       case "$f" in
 269         basename | getpagesize | insque | random | strcasecmp)
 270           ;;
 271         strncasecmp | strdup | vfork | waitpid | vasprintf)
 272           ;;
 273         *)
 274           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 275           AC_DEFINE_UNQUOTED($n)
 276           ;;
 277       esac
 278     done
 279
 280     # VxWorks doesn't provide any of the variables in $vars, so we
 281     # don't have to check them here.
 282
 283     # Of the functions in $checkfuncs, VxWorks only has strerror.
 284     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 285
 286     setobjs=yes
 287     ;;
 288
 289   esac
 290 fi
 291
 292 if test -z "${setobjs}"; then
 293
 294   case "${host}" in
 295
 296   *-*-cygwin*)
 297     # The Cygwin library actually uses a couple of files from
 298     # libiberty when it is built.  If we are building a native
 299     # Cygwin, and we run the tests, we will appear to have these
 300     # files.  However, when we go on to build winsup, we will wind up
 301     # with a library which does not have the files, since they should
 302     # have come from libiberty.
 303
 304     # We handle this by removing the functions the winsup library
 305     # provides from our shell variables, so that they appear to be
 306     # missing.
 307
 308     # DJ - only if we're *building* cygwin, not just building *with* cygwin
 309
 310     if test -n "${with_target_subdir}"
 311     then
 312       funcs="`echo $funcs | sed -e 's/random//'`"
 313       LIBOBJS="$LIBOBJS random.o"
 314       vars="`echo $vars | sed -e 's/sys_siglist//'`"
 315       checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
 316     fi
 317     ;;
 318
 319   *-*-mingw32*)
 320     # Under mingw32, sys_nerr and sys_errlist exist, but they are
 321     # macros, so the test below won't find them.
 322     libiberty_cv_var_sys_nerr=yes
 323     libiberty_cv_var_sys_errlist=yes
 324     ;;
 325
 326   *-*-uwin*)
 327     # Under some versions of uwin, vfork is notoriously buggy and the test
 328     # can hang configure; on other versions, vfork exists just as a stub.
 329     # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 330     ac_cv_func_vfork_works=no
 331     # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
 332     # macros (actually, these are imported from a DLL, but the end effect
 333     # is the same), so the test below won't find them.
 334     libiberty_cv_var_sys_nerr=yes
 335     libiberty_cv_var_sys_errlist=yes
 336     ;;
 337
 338   *-*-*vms*)
 339     # Under VMS, vfork works very different than on Unix. The standard test
 340     # won't work, and it isn't easily adaptable. It makes more sense to
 341     # just force it.
 342     ac_cv_func_vfork_works=yes
 343     ;;
 344
 345   esac
 346
 347   # We haven't set the list of objects yet.  Use the standard autoconf
 348   # tests.  This will only work if the compiler works.
 349   AC_PROG_CC_WORKS
 350   AC_REPLACE_FUNCS($funcs)
 351   libiberty_AC_FUNC_C_ALLOCA
 352   AC_FUNC_VFORK
 353   if test $ac_cv_func_vfork_works = no; then
 354     LIBOBJS="$LIBOBJS vfork.o"
 355   fi
 356   # We only need _doprnt if we might use it to implement v*printf.
 357   if test $ac_cv_func_vprintf != yes \
 358      || test $ac_cv_func_vfprintf != yes \
 359      || test $ac_cv_func_vsprintf != yes; then
 360     AC_REPLACE_FUNCS(_doprnt)
 361   fi
 362
 363   for v in $vars; do
 364     AC_MSG_CHECKING([for $v])
 365     AC_CACHE_VAL(libiberty_cv_var_$v,
 366       [AC_TRY_LINK([int *p;], [extern int $v; p = &$v;],
 367                    [eval "libiberty_cv_var_$v=yes"],
 368                    [eval "libiberty_cv_var_$v=no"])])
 369     if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
 370       AC_MSG_RESULT(yes)
 371       n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 372       AC_DEFINE_UNQUOTED($n)
 373     else
 374       AC_MSG_RESULT(no)
 375     fi
 376   done
 377   AC_CHECK_FUNCS($checkfuncs)
 378 fi
 379
 380 libiberty_AC_FUNC_STRNCMP
 381
 382 # Install a library built with a cross compiler in $(tooldir) rather
 383 # than $(libdir).
 384 if test -z "${with_cross_host}"; then
 385   INSTALL_DEST=libdir
 386 else
 387   INSTALL_DEST=tooldir
 388 fi
 389 AC_SUBST(INSTALL_DEST)
 390
 391 # We need multilib support, but only if configuring for the target.
 392 AC_OUTPUT(Makefile testsuite/Makefile,
 393 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
 394 if test -n "$CONFIG_FILES"; then
 395   if test -n "${with_target_subdir}"; then
 396     # FIXME: We shouldn't need to set ac_file
 397     ac_file=Makefile
 398     . ${libiberty_topdir}/config-ml.in
 399   fi
 400 fi],
 401 srcdir=${srcdir}
 402 host=${host}
 403 target=${target}
 404 with_target_subdir=${with_target_subdir}
 405 with_multisubdir=${with_multisubdir}
 406 ac_configure_args="--enable-multilib ${ac_configure_args}"
 407 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 408 libiberty_topdir=${libiberty_topdir}
 409 )